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Most people relapse — most in the first 90 days
Most people relapse in the first year after treatment — typically 60–90% depending on the substance, with opioid use disorder at the high end without medication-assisted treatment. The often-quoted 40–60% figure comes from comparing addiction to other chronic illnesses; the lived first-year reality runs higher. Most relapses happen in the first ninety days, when the nervous system is loud and the routines aren't built yet. Aftercare moves those numbers meaningfully — that is the entire premise of this course.